INTRODUCING
COFFEE HACKING:
INSTANT BREWAGE RELEASE EXECUTION
Dump MiZip
4 Bytes ID
check Byte
SAK & ATQ_1
Sector 0
Bloc 0
Sector 1
Sector 2
Sector 3
Sector 4
Bloc 1
Bloc 2
KeyA
KeyB
ACs
Bloc 3
The holy Grail
01 C0 = 4.48€
"Checksum" : 01 ^ C0
Bloc selection :
AA -> bloc 0
55 -> bloc 1
Counter
The holy Grail
13.37 €
0x 05 39
0x 3C
Checksum
Dump analysis
D1
D2
D1 XOR D2
Dump analysis
D1 XOR D2
Keys generation
Keys generation
Master Keys
| n | Sn |
|---|---|
| 1 | 09 12 5a 25 89 e5 |
| 2 | ab 75 c9 37 92 2f |
| 3 | e2 72 41 af 2c 09 |
| 4 | 31 7a b7 2f 44 90 |
| n | Tn |
|---|---|
| 1 | f1 2c 84 53 d8 21 |
| 2 | 73 e7 99 fe 32 41 |
| 3 | aa 4d 13 76 56 ae |
| 4 | b0 13 27 27 2d fd |
Fake
UID : DE AD BE EF
Fake
FAIL
Change 1 Byte of Sector 2 KeyB
Coffee machine can't write money sector
Coffee machine print the money of the previous yellow-key